Listed on Barracuda RBL
Your sending IP is on the Barracuda Reputation Block List. Barracuda appliances will reject or quarantine your mail.
Impact — High impact
Barracuda is widely deployed in SMBs, mid-market, and K-12 education. A BRBL listing locks you out of a significant chunk of US business mail traffic.
What causes it
- A Barracuda appliance observed enough spam-like traffic from your IP to automatically list it.
- User-reported spam from your IP across many Barracuda customers.
- A compromise on your server leaked spam before you noticed.
How to fix it
Step 1: Confirm the listing
Visit barracudacentral.org/rbl/removal-request and enter your IP. You'll see the listing status and the removal form.
Step 2: Fix the root cause before requesting removal
If you remove without fixing, you'll be re-listed within hours. Audit outbound mail, rotate credentials, patch servers, disable any open relays.
Step 3: Request removal
Fill out the removal form. Barracuda reviews manually within 12 hours. If approved, your IP is delisted and your reputation starts recovering.
Fixed it? Run a fresh test to confirm.
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